Validation of Operational Definition to Identify Patients with Osteoporotic Hip Fractures in Administrative Claims Data

Assessing the Risk for Falls in Older Adults After Initiating Gabapentin Versus Duloxetine

BACKGROUND

The evidence informing the harms of gabapentin use are at risk of bias from comparing users with nonusers.

OBJECTIVE

To describe the risk for fall-related outcomes in older adults starting treatment with gabapentin versus duloxetine.

DESIGN

New user, active comparator study using a target trial emulation framework.

SETTING

MarketScan (IBM) commercial claims between January 2014 and December 2021.

PARTICIPANTS

Adults aged 65 years or older with diabetic neuropathy, postherpetic neuralgia, or fibromyalgia and without depression, anxiety, seizures, or cancer in the 365 days before cohort entry.

INTERVENTION

New initiation of treatment with gabapentin or duloxetine (comparator).

MEASUREMENTS

The primary outcome was the hazard of experiencing any fall-related visit in the 6 months after initiating gabapentin or duloxetine until discontinuation of treatment. Secondary outcomes were hazard of severe fall-related events defined as a fall associated with hip fracture or emergency department visit or hospitalization associated with a fall. Stabilized inverse probability of treatment weighting was used to adjust for baseline characteristics.

RESULTS

Our analytic cohort included 57 086 older adults with a diagnosis of interest initiating treatment with gabapentin (n = 52 152) or duloxetine (n = 4934). Overall median follow-up duration was 30 days (IQR, 30 to 90 days). Weighted cumulative incidence of a fall-related visit per 1000 person-years at 30, 90, and 180 days was 103.60, 90.44, and 84.44 for gabapentin users and 203.43, 177.73, and 158.21 for duloxetine users, respectively. At 6-month follow-up, incident gabapentin users had lower hazard of falls (hazard ratio, 0.52 [95% CI, 0.43 to 0.64]), but there was no difference in the hazards of experiencing severe falls. Results were similar across sensitivity and subgroup analyses.

LIMITATION

Claims may contain fewer frail adults and undercount falls.

CONCLUSION

Compared with incident use of duloxetine, incident use of gabapentin was not associated with increased fall-related visits.

PRIMARY FUNDING SOURCE

None.

Language Preference, Surgical Wait Time, and Outcomes Among Older Adults With Hip Fracture

Importance

Patients with a non-English language preference served within English-dominant health care settings are at increased risk of adverse events that may be associated with communication barriers and inequitable access to care.

Objective

To investigate the association of non-English language preference with surgical wait time and postoperative outcomes in older patients undergoing hip fracture repair.

Design, Setting, and Participants

This population-based, retrospective cohort study was conducted using linked databases to measure surgical wait time and postoperative outcomes among older adults (aged ≥66 years) in Ontario, Canada, who underwent hip fracture surgery between January 1, 2017, and December 31, 2022. Propensity-based overlap weighting accounting for baseline patient characteristics was used to compare primary and secondary outcomes.

Exposure

Non-English language preference.

Main Outcomes and Measures

The primary outcome was surgical delay beyond 24 hours. Secondary outcomes included time to surgery, surgical delay beyond 48 hours, postoperative medical complications, length of stay, discharge destination, 30-day mortality, and 30-day hospital readmission.

Results

Among 35 238 patients who underwent hip fracture surgery, 28 815 individuals (81.8%) were English speakers (mean [SD] age, 84.4 [8.0] years; 19 965 female [69.3%]) and 6423 individuals (18.2%) were non-English speakers (mean [SD] age, 85.5 [7.0] years; 4556 female [70.9%]). The median (IQR) wait time for surgery was similar for English (24 [16-41] hours) and non-English (25 [16-42] hours) speakers. There was no significant difference in surgical delay beyond 24 hours between English-speaking and non-English-speaking patients (3321 patients [51.7%] vs 14 499 patients [50.3%]; adjusted relative risk [aRR], 1.00; 95% CI, 0.98-1.03). Compared with English speakers, patients with a non-English language preference had increased risk of delirium (4207 patients [14.6%] vs 1209 patients [18.8%]; aRR, 1.10; 95% CI, 1.03-1.17), myocardial infarction (150 patients [0.5%] vs 43 patients [0.7%]; aRR, 1.52; 95% CI, 1.04-2.22), longer length of stay (median [IQR], 10 [6-17] vs 11 [7-20] days; aRR per 1-day increase, 1.11; 95% CI, 1.06-1.15), and more frequent discharge to a nursing home (1814 of 26 673 patients surviving to discharge [6.8%] vs 413 of 5903 patients surviving to discharge [7.0%]; aRR, 1.13; 95% CI, 1.01-1.27).

Conclusions and Relevance

In this study of older adults with hip fracture, non-English language preference was associated with increased risk of delirium, myocardial infarction, longer length of stay, and discharge to a nursing home. These findings suggest inequities in hip fracture care for patients with a non-English language preference.

Duration of osteoporosis treatment to reduce the risk of subsequent osteoporotic fracture and all-cause mortality in elderly hip fracture patients in a Korean real-world study

This study aimed to evaluate the association between treatment duration of osteoporosis medications and clinical outcomes of patients with hip fracture. We found that the risk of subsequent osteoporotic fractures and all-cause mortality showed a decreasing trend as the treatment duration of osteoporosis medications increased.

PURPOSE

To assess the risk of subsequent osteoporotic fracture (SOF) and all-cause mortality (ACM) in elderly patients with hip fracture in South Korea and to evaluate the potential reduction in the risk of SOF and ACM with varying durations of osteoporosis treatment.

METHODS

Newly diagnosed patients with hip fracture (age ≥ 60 years) who initiated osteoporosis medication within 3 months after the hip fracture from 2003-2014 were identified from the National Health Insurance Service-Senior cohort. The risk of SOF and ACM was estimated after the 1-year exposure-measurement period. Adjusted hazard ratios (aHRs) were calculated for treatment duration of osteoporosis medications categorized as short-term treatment (ST, < 3 months), early discontinuation (ED, ≥ 3- < 6 months), late discontinuation (LD, ≥ 6- < 12 months), and treatment continuation (TC, ≥ 12 months).

RESULTS

A total of 4,421 patients were included in the analysis. The 3-year cumulative incidence of SOF was 22.4%, 22.0%, 23.9%, and 21.6%, and that of 3-year ACM was 29.8%, 27.0%, 19.7%, and 18.9% in the ST, ED, LD, and TC groups, respectively. Compared with the ST group, the risk of SOF showed a decreasing trend in the TC group (aHR [95% CI], 0.77 [0.58-1.00]). The risk of ACM was significantly reduced in the LD (aHR 0.68 [0.57-0.82]) and TC (aHR 0.65 [0.50-0.84]) groups.

CONCLUSION

These findings underscore the importance of early and continuous osteoporosis treatment for elderly patients with hip fracture to improve health outcomes. The benefits of long-term osteoporosis treatment should be discussed in clinical practice to improve overall health outcomes.

Association of Androgen Deprivation Therapy with Osteoporotic Fracture in Patients with Prostate Cancer with Low Tumor Burden Using a Retrospective Population-Based Propensity-Score-Matched Cohort

This study evaluated the effect of androgen deprivation therapy (ADT) on osteoporotic fractures (OF) and its prognostic effect on overall survival in patients with localized or regional prostate cancer (PC) using the Korean National Insurance Dataset. A total of 8883 pairs of 1:1 propensity-score-matched patients with localized or regional PC were retrospectively enrolled between 2007 and 2016. All patients underwent at least 1 year of follow-up to evaluate therapeutic outcomes. Multivariate analysis was performed to determine the prognostic effect of ADT on OF. During a mean follow-up of 47.7 months, 977 (3.43%) patients developed OF, and the incidences of hip, spine, and wrist fractures were significantly different between ADT and non-ADT groups (p < 0.05). The ADT group had a significantly higher incidence of OF (hazard ratio 2.055, 95% confidence interval 1.747-2.417) than the non-ADT group (p < 0.05), and the incidence of spine/hip/wrist OF was significantly higher in the ADT group regardless of the PC stage (p < 0.05). Multivariate analysis failed to show any significant difference in overall survival between the two groups (p > 0.05). ADT resulted in a significantly higher incidence of OF among patients with localized and regional PC, but the overall survival did not differ between ADT and non-ADT groups.

Health Informatics: The Foundations of Public Health

As technology continues to evolve, vast amounts of diverse digital data are becoming more easily generated and collected [...]

Big Data Research in the Field of Endocrine Diseases Using the Korean National Health Information Database

The Korean National Health Information Database (NHID) contains big data combining information obtained from the National Health Insurance Service and health examinations. Data are provided in the form of a cohort, and the NHID can be used to conduct longitudinal studies and research on rare diseases. Moreover, data on the cause and date of death are provided by Statistics Korea. Research and publications based on the NHID have increased explosively in the field of endocrine disorders. However, because the data were not collected for research purposes, studies using the NHID have limitations, particularly the need for the operational definition of diseases. In this review, we describe the characteristics of the Korean NHID, operational definitions of endocrine diseases used for research, and an overview of recent studies in endocrinology using the Korean NHID.